Equivalent & Substitute Parts for Renesas 7024L30J8 SRAM Memory IC

Part Overview

The Renesas 7024L30J8 is a 64Kbit dual-port asynchronous SRAM memory IC in 84-PLCC surface mount packaging. This part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The 7024L30J8 operates with a 30 ns access time and is designed for parallel memory interface applications requiring volatile storage in industrial and embedded systems.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	64Kbit
Memory Organization	4K x 16
Memory Interface	Parallel
Access Time	30 ns
Voltage Supply Range	4.5V to 5.5V
Operating Temperature	0°C to 70°C
Package Type	84-PLCC (J-Lead)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 7024L30J8 is determined by the following critical parameters that must remain constant across equivalent parts:

Memory capacity: 64Kbit
Memory organization: 4K x 16 configuration
Interface type: Parallel dual-port asynchronous
Package: 84-PLCC (J-Lead) with identical pinout
Supply voltage range: 4.5V to 5.5V
Operating temperature range: 0°C to 70°C
Mounting type: Surface mount

The Renesas 7024L15JG8 meets all these substitution criteria. The primary difference is the access time specification (15 ns versus 30 ns), which represents an improvement in performance characteristics. Faster access time is backward compatible with applications designed for the 30 ns part, as the substitute operates within the same electrical and mechanical envelope.

Parameter Comparison

Parameter	7024L30J8 (Main Part)	7024L15JG8 (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	64Kbit	64Kbit
Memory Organization	4K x 16	4K x 16
Memory Interface	Parallel	Parallel
Access Time	30 ns	15 ns
Write Cycle Time	30 ns	15 ns
Voltage Supply Range	4.5V to 5.5V	4.5V to 5.5V
Operating Temperature	0°C to 70°C	0°C to 70°C
Package Type	84-PLCC (J-Lead)	84-PLCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 7024L15JG8 is the direct substitute for the obsolete 7024L30J8. Selection of the substitute part is justified on the following engineering grounds:

Functional equivalence: Identical memory capacity, organization, interface type, and pinout ensure direct replacement capability
Active product status: The 7024L15JG8 is currently in active production, ensuring long-term availability and supply chain continuity
Regulatory compliance: The substitute meets ROHS3 compliance requirements, whereas the original part is non-compliant, supporting modern manufacturing and environmental standards
Performance improvement: The 15 ns access time specification exceeds the original 30 ns requirement, providing enhanced performance margin without design modification
Identical electrical specifications: Supply voltage range and operating temperature range remain unchanged, eliminating the need for circuit redesign

Frequently Asked Questions (FAQ)

Q: Can the 7024L15JG8 be used as a direct replacement for the 7024L30J8 in existing designs?

A: Yes. The 7024L15JG8 is pin-compatible and functionally equivalent. The identical 84-PLCC package, pinout, memory organization (4K x 16), and electrical specifications (4.5V to 5.5V supply, 0°C to 70°C operating range) enable direct substitution without circuit modification.

Q: What is the significance of the access time difference between the two parts?

A: The 7024L15JG8 operates with 15 ns access time compared to the 7024L30J8's 30 ns specification. This represents a performance improvement. Faster access time is backward compatible with designs specified for 30 ns operation, as the substitute meets or exceeds the original timing requirements.

Q: Are there packaging differences between these parts?

A: Both parts use 84-PLCC (J-Lead) surface mount packaging with identical dimensions (29.31 x 29.31 mm). The 7024L15JG8 is supplied in Tape & Reel (TR) format, while the original part does not specify packaging format. This difference does not affect electrical or mechanical compatibility.

Q: What compliance advantages does the substitute offer?

A: The 7024L15JG8 is ROHS3 compliant, whereas the 7024L30J8 is non-compliant. This compliance status is relevant for applications subject to environmental and regulatory requirements in manufacturing and end-use markets.

Q: Are the moisture sensitivity levels identical?

A: Yes. Both parts carry Moisture Sensitivity Level (MSL) 3 with 168-hour floor life, indicating identical handling and storage requirements.

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